Internal-combustion engine.



. B.'T.G1LLIARD.

INTERNAL y GOMBUSTION ENGINE.

' APPLICATION. FILED MAR. 1.2, 1909. 955,1 51

' Y Patented Apr. 19,1910.

2 SHEETS-SHEET 2.

, INVENTOR Y ATTORNEY nnnns'r r. (iraniani), .or N'nw INTERNAL-connusmon ENGINE.- I

specification of Letters Patent ,Pt'ented- Apr, y19s 1910,

Application led March 12, 1909. Serialo. 483,055.

To all whom it may concern:

Be it known. that I, ERNEST T. GimnAnD, a citizen ofthe Republic of Switzerland, and a resident of the city of New York, in the county of New York and State ofNew York, United States of America, have invented certain new and useful Improvements in Internal-Combustion Engines, oi which the following is a specification.

My invention relates to internal combustion engines, and especially to those of the two-strokel cycle type. Its object is. to improve upon engines of this kind, and to make their operation more certain and ref liable. i

I will describe my invention in the following specification and point out the novel features thereof in the appended claims.

Referring to the drawings, Figure 1 is a sectional end elevation of .a so-called twocycle .engine with my invention applied..I thereto. Fig. 2 is a sectional lan view, on f an enlarged scale, of a part o this engine,

the section in this figure being taken on the line 2-2 of Fig. 1. Fig. 3 is a sectional end elevation, on the same scale, of that portion oit-he engine which is shown in Fig. 2, this section being taken on the line 3-3 of Fig. 2.- Fig. 4 is a magnified cross-section of a portion of a screen of special construction which I use in carrying out my invention.

jacket 19, if desired.

Like characters of: reference designate corresponding parts in all of the figures.

10 designates an internal combustion engine which m-ay be of an of the Well-known' l constructions. I have s own it asan ordinary twoort two-cycle enginev the casing of which orms a working cylinder 11, within which is a reciprocatory piston 1 2. 13 is the compression chamber'in the base of this casing, and 14 is the crank-shaft within the compression chamber. `The crank-shaft is connected with the piston in the usual manner by means of a connecting rod 15.

16 designates a check-valve'through which explosive fluid mixture is admitted to the com ression chamber during certain parts of tile operation of the engine.

17 designates the inlet port or ports of the cylinder 11, and 18 the exhaust port. The exhaust as well as theupper portion of the cylinder 11 maybe surrounded by a water- A communicaiing passage 20 is provided between'the compression chamber 13 and the mixture V.in the i inletl port or ports 17. 4 It is' thefusual 'pracf tice to form this passage -in the casing as is shown in theV drawings. In this case, however, I provide a partially annular auxiliary chamber -21, conforming to the'shape of the cylinder 11, .opposite the port or ports 17 and at the upper end of the passage 20.

22 is a removable-cover -plate which forms the rear wall of the auxiliary chamber. The

inner face of this plate is referably con centric with the `wall of t e cylinder 11. This plate is affixed to the casing by bolts, 23. The inner portion of the plate is constructed to form shoulders 24 between which and corresponding'shoulders 25 of the cyl;- inder casing, Vis supported a screen y26fwhich conforms to the cylindrical-shapey of the auxilia chamber, and is placed diagonally across two compartments.

The screen itself is in Vsome such way as t at illustrated in Fig. 4,.:.in which i 27 designates two layers of woven wire placed parallel with each other a -desired distance apart, and with a filler 28 -in the 'space between them of steel shavings or other desired noniniammable material. The woven laylers-may be riveted or tied to` gether along t eir edges as is indicated at V29. It is obvious that this screen will be securely held in desired positionbythe coverlate 22, and that when the latter is remove the screen may be readily inspected, and, if desired, maybe removed and cleaned.

In order 'to describe the operation and use of this invention it' is notnecessary to describe the well-known cycle of operations of the engine, except to' point. out the fact that the explosive mixture under pressure in the compression chamber 13 is 'carried up through passage 20, auxiliary chamber 21, and through the screen 26 to the inlet ports 17 andthrough the latter to the cylinder 11. In passing through the'screen the mixture is strained so that no excess of oil or kother foreign matter canfenter the cylinder. Dur- 'ne, port or ports 17 are opened by the escent of piston I2,"ater ,Working cylinder. From` various causes, this opening of a' path of communication-,between the cylinder 11 `and the compression chamber 13 at this 'period of the engines cycle,l frequently causes 1gnition. of the explosive mixture in the base,

is 'chamber so that it divides Vit into l as. plreferably constructed' ing anotherpart of the operation of thefenthe ignition ci provides thev I working cylinder,

and this often results in serious trouble. rihese base explosions are generally caused by sparks from the cylinder flying into the passage 2O. The screen 26 which I have provided stops any sparks or hot gases from entering this passage from the working cylinder, and effectively prevents this trouble. It is to be noted that the concentric shape of' the auxiliary chamber 2l and of the screen gives sufficient area to amply provide for thepassage of gases into the cylinder, so that this arrangement does not interfere with the rapidity of action of the engine nor decrease its efficiency. On the other hand,

the reliability and consequent effectiveness' of the' engine are enhanced. The fact that the chamber and its cover-plate and screen follow the contour of the engine cylinder required room for these' parts Without detracting from the appearance of the engine.

It is obvious that this invention may be applied to other types of engines than that herein shown, and 1 do not, of course, wish to limit myself in this respect.

that I claim is 1. In an internal combustion engine, a casing forming a c ylinder, an inlet-port and a gas passage, said casing also forming an enlarged chamber intermeriliate said port and passage and concentric with the cylinder; and a screen conforming to the cylindrical shape of the chamber and dividing said chamber into two compartments, one of which is in communication with the port and the other with the gas passage.

In an internal combustion engine, .a casing forming a cylinder, an inlet port and a gas passage, said casing also forming an enlarged chamber intermediate said port and passage and concentric with the cylinder; a

. the other of screen conforming to the cylindrical shape of the chamber and dividing said chamber into two con'ipartn'ients, one of which is in comn'iunication with the port and the other with the gas passage, and a removable coverplate forming one side of said chamber and arranged to hold the screen in place.

In an internal combustion engine, a

the filler; a removable casing .forming a compression chamber, a

and an intermediate anxiliary chamber concentric with the cylinder; a screen conforming to the cylindrical sha )e of the auxiliary chamber and dividing' said chaniber into two compartments, and means of communication between the compression chamber and the working cylinder through said auxiliary chamber and screen. et. In an internal combustion casing forming a working cylinder, and an intermediate auX- iliary chamber concentric with and partly surrounding said` cylinder; a screen con-I engine, a

compression chamber, a

forming to the cylindrical shape of the auxiliary chamber dividing said chamber into two compartments, a connection between the compression chamber and one of'said compartments, and a connection between the working cylinder and the other of said compartments.

5. In an internal combustion engine, a casing forming a compression chamber, a Working cylinder, and an intermediate auxiliary chamber concentric with and partly surrounding said' cylinder; a screen conforming iliary chamber dividing said chamber into two compartments, a removable cover-plate forming one side of said chamber and arranged to hold said screen in place, a connection between the compression chamber and one of said compartments, and a connec ion between the working cylinder and the other of said compartments.-

G. In an internal combustion engine, a

casing forming a compression chamber, a working cylinder, and an intermediate auX- iliary chamber concentric with and partly surrounding said cylinder; a screen conforming to the cylindrical shape of the auxiliary chamber, said screen being set obliquely across said chamber and arranged to divide said chamber into two con'ipartments, a connection between the compression chamber and 011e of said compartments, and a connection between the working cylinderand said compartments.

7. In a two-stroke-cycle internal combustion engine, a casing forming a compression chamber, a working cylinder, and an intermediate auxiliary chamber concentric with and partly surrounding said cylinder; a screen conforming to the cylindrical shape of the auxiliary chamber, said screen comprising two layers 'of woven wire and a iiller between said layers, means for fastening said layers together and thereby holding covcrplate forming one side of the auxiliary chamber, shoulders on said casing and on said cover-plate for holding the screen obliquely across the auX- iiiaryl chamber to divide said chamber into two compartments. a connection between the compression chamber and one of said compartments, and a connection between the working cylinder and the other of said compartments,` both of said connections having an area less than that of the screen. p

ln testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

E' CNEST T. GILLIARD. \'Vitnesses Fnancisll lVooD, ELLA TUoH.

to the cylindrical shape of the aux- 

